Electrical Characteristics: 0˚C < TA < 70˚C; 0˚C < TJ < 125˚C; 8V < VCC < 14V; 2.0V DAC Code
(VID4 = VID3 = VID2 = VID1 =0, VID0 = 1), CGATE(H) = CGATE(L) = 3.3nF, COFF = 330pF, CSS= 0.1µF; Unless otherwise stated.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
ꢀ Fault Protection continued
SS Comp Clamp Voltage
VFB = 2.7V, VSS = 0V
Increase VFB till normal off-time
0.50
0.9
0.95
1.0
1.10
1.1
V
V
VFB Low Comparator
ꢀ PWM Comparator
Transient Response
V
FB = 1.2V to 5V 500ns after GATE(H)
115
175
300
ns
ns
(after Blanking time) to
GATE(H) = (VCC – 1V)
to 1V
Drive VFB 1.2V to 5V upon GATE(H)
rising edge (> VCC – 1V), measure
GATE(H) pulse width
Minimum Pulse Width
(Blanking Time)
100
200
ꢀ COFF
Normal Off-Time
Extended Off-Time
VFB = 2.7V
1.0
5.0
1.6
8.0
2.3
12.0
µs
µs
VSS = VFB = 0V
ꢀ Time-Out Timer
Time-Out Time
V
FB = 2.7V, Measure GATE(H)
10
30
30
50
50
70
µs
%
Pulse Width
VFB = 0V
Fault Duty Cycle
ꢀ Voltage Identification DAC
Accuracy (all codes except 11111) Measure VFB = COMP, (COFF = Gnd)
VID4 VID3 VID2 VID1VID0
-1.0
1.0
%
25˚C ≤ TJ ≤ 125˚C, VCC = 12V
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
0
0
0
0
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
0
1
0
1
3.489
3.390
3.291
3.192
3.093
2.994
2.895
2.796
2.697
2.598
2.499
2.400
2.301
2.202
2.103
2.054
2.004
1.955
1.905
3.525
3.425
3.325
3.225
3.125
3.025
2.925
2.825
2.725
2.625
2.525
2.425
2.325
2.225
2.125
2.075
2.025
1.975
1.925
3.560
3.459
3.358
3.257
3.156
3.055
2.954
2.853
2.752
2.651
2.550
2.449
2.348
2.247
2.146
2.095
2.045
1.994
1.944
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
4
CHERRY [ CHERRY SEMICONDUCTOR CORPORATION ]
